The Liquid Resource is an unseen substance mentioned in Metroid Prime: Federation Force. It is present in large quantities at a shallow depth underground on Excelcion. The crew of the G.F.S. Daedalus discovered this resource and was assigned to collect samples of it, via Recovery Pods, for study. However, Samus Aran, on recon for the Galactic Federation, discovered that the Space Pirates were planning to attack the Daedalus. Her crew evacuated the ship before it was shot down, but was forced to leave the Pods behind. The Federation Force later recovers the Pods during M08: Dustoff, but not without facing heavy Pirate resistance.